Blue Jays left-hander J.A. Happ is back throwing bullpen sessions while he returns to health while on the disabled list with lower back discomfort. The Jays likely will have Happ go on a rehab assignment after his 15 days are up, and then the $64,000 question is just where does he go -- the rotation or the bullpen?

General manager Alex Anthopoulos said it's pretty much up in the air at this point.